event_i

Generates a score event from an instrument.

Syntax

event_i "scorechar", iinsnum, idelay, idur, [, ip4] [, ip5] [, ...]
event_i "scorechar", "insname", idelay, idur, [, ip4] [, ip5] [, ...]

Initialization

“scorechar” -- A string (in double-quotes) representing the first p-field in a score statement. This is usually “e”, “f”, or “i”.

“insname” -- A string (in double-quotes) representing a named instrument.

iinsnum -- The instrument to use for the event. This corresponds to the first p-field, p1, in a score statement.

idelay -- When (in seconds) the event will occur from the current performance time. This corresponds to the second p-field, p2, in a score statement.

idur -- How long (in seconds) the event will happen. This corresponds to the third p-field, p3, in a score statement.

ip4, ip5, ... (optional) -- Parameters representing additional p-field in a score statement. It starts with the fourth p-field, p4.

Performance

The event is added to the queue at initialisation time.

Note

Note that the event_i opcode cannot accept string p-fields. If you need to pass strings when instantiating an instrument, use the scoreline or scoreline_i opcode.

Examples

Here is an example of the event_i opcode. It uses the file event_i.csd.

<CsoundSynthesizer>
<CsOptions>
; Select audio/midi flags here according to platform
-odac     ;;;RT audio out
;-iadc    ;;;uncomment -iadc if RT audio input is needed too
; For Non-realtime ouput leave only the line below:
; -o event_i.wav -W ;;; for file output any platform
</CsOptions>
<CsInstruments>

sr = 44100
ksmps = 32
nchnls = 2
0dbfs  = 1

seed 0
gisine ftgen 0, 0, 2^10, 10, 1

instr 1 ;master instrument

ininstr = 10 ;number of called instances
indx = 0
loop:
ipan  random 0, 1
ifreq random 100, 1000
iamp  = 1/ininstr
event_i "i", 10, 0, p3, iamp, ifreq, ipan
loop_lt indx, 1, ininstr, loop

endin

instr 10

      print p4, p5, p6
ipeak random 0, 1 ;where is the envelope peak
asig  poscil3 p4, p5, gisine
aenv  transeg 0, p3*ipeak, 6, 1, p3-p3*ipeak, -6, 0
aL,aR pan2 asig*aenv, p6
      outs aL, aR

endin

</CsInstruments>
<CsScore>
i1 0 10
i1 8 10
i1 16 15
e
</CsScore>
</CsoundSynthesizer>

See also

Instrument Invocation

Credits

Written by Istvan Varga.

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